AceShowbiz -

Justin Bieber kicked of his Purpose World Tour with a bang on Tuesday night, March 8. During his performance at the KeyArena in Seattle, the "What Do You Mean" hitmaker got drenched by a rain machine and took off his shirt.

Following a number of costume changes, Justin was seen throwing on a variety of outfits before being drenched mid-song as the water works were turned on. The "Boyfriend" crooner then threw off his jacket and the wet grey vest, proudly showing off his torso to the audience.

The singer was later joined by a number of muscular dancers on stage. He flexed his guns and abs during a high tempo dance routine. He also did some acrobatics on the trampoline, showing off his considerable poise and athletic prowess by bouncing up and flipping head over heels.

TRAMPOLINE BIEBER!!!!! pic.twitter.com/wdL8oC5euq

— Marc Snetiker (@MarcSnetiker) March 10, 2016

Justin opened the concert with his song "Mark My Words" and closed with "Sorry". Aside from his shirtless performance, the "Baby" singer delivered a sexy performance with a female dancer. The dancer, who wore black underwear with a sheer bodysuit, was seen grinding up against Justin.

THE NO PRESSURE DANCE WAS THE SEXIEST, HOTTEST DANCE EVER HANDS DOWN pic.twitter.com/nL6H2Lytnp

— 3/9/16 (@rauhlchildren) March 10, 2016

Another video of Justin Bieber performing on the #PurposeTour tonight in Seattle, Washington. (March 9) pic.twitter.com/BJtdV2FUTE

— JustinBieberCrew.com (@JBCrewdotcom) March 10, 2016

The Purpose World Tour will continue across the U.S. until July before starting up again in Europe in September. The tour is set to conclude in London on November 29.